91287116 has 12 divisors (see below), whose sum is σ = 159979680. Its totient is φ = 45578640.

The previous prime is 91287109. The next prime is 91287137. The reversal of 91287116 is 61178219.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12995 + ... + 18746.

It is an arithmetic number, because the mean of its divisors is an integer number (13331640).

Almost surely, 2^91287116 is an apocalyptic number.

It is an amenable number.

91287116 is a deficient number, since it is larger than the sum of its proper divisors (68692564).

91287116 is a wasteful number, since it uses less digits than its factorization.

91287116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32464 (or 32462 counting only the distinct ones).

The product of its digits is 6048, while the sum is 35.

The square root of 91287116 is about 9554.4291299899. The cubic root of 91287116 is about 450.2666995183.

The spelling of 91287116 in words is "ninety-one million, two hundred eighty-seven thousand, one hundred sixteen".